public int Them(LOAIVAITRO lpDTO)
 {
     try
     {
         LinQDataContext db = new LinQDataContext(global::DAOAuction.Properties.Settings.Default.webdoantruongConnectionString);
          db.LOAIVAITRO_add(
             lpDTO.TenLoaiVaiTro
             );
          return 1;
     }
     catch
     {
         return 0;
     }
 }